Phenergan liquid

What it’s used for

• Allergy relief – hay fever, skin rashes, hives, insect bites

• Motion sickness – prevention and treatment

• Short-term sedation – to help with sleep difficulties

• Nausea and vomiting – especially linked to travel or illness

Strength & form

• Concentration: Usually 5 mg or 10 mg of promethazine per 5 ml (check your bottle’s label, as strengths vary)

• Bottle size: 100 ml

• Form: Sweet-tasting oral liquid

How it works

• Blocks histamine H1 receptors, reducing allergic symptoms (like runny nose, itching, swelling)

• Depresses certain brain activity, which gives a calming and sleep-inducing effect

• Acts on the vomiting center in the brain to prevent nausea

Typical dosing

(Always follow the specific instructions on your prescription or bottle)

• Children (over 2 years) – dose based on age and weight, usually once or twice daily

• Adults – often 5–25 ml depending on purpose, taken at night or up to 3 times a day

• Not recommended for children under 2 years due to risk of severe breathing problems

Warnings & precautions

• May cause drowsiness – avoid driving or operating heavy machinery

• Avoid alcohol (increases sedative effects)

• Use with caution in elderly patients, those with respiratory conditions, or certain medical histories

• Can interact with sedatives, antidepressants, and some painkillers

Side effects

• Common: drowsiness, dry mouth, blurred vision, constipation

• Rare but serious: breathing difficulties, confusion, severe allergic reaction (seek medical help immediately)